Propeller.



W. D. HAYNES.

PROPELLER.

APPLICATION FILED SEPT. 1. 1909.

957,056. Patented May 3, 1910.

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UNITED STATES PATENT oEEIoE.

WALLACE D. HAYNES, OF OAKLAND, CALIFORNIA.

Patented May 3, 1910.

PBOPELLER.

957,056. Specification of Letters Patent.

Application filed September 1, 1909. Serial No. 515,717.

To all whom it may concern:

Be it known that I, WALLACE'D. HAYNES, a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented new and useful Improvements in Propellers, of which thefollowing is a specification.

My invention relates to improvements in propelling mechanism forvessels.

It consists in the novel arrangement of spiral screws mounted parallelwith the ves sels run, and means connecting said screws with the engineor motor within the vessel. It also comprises details of constructionwhich will be more fully explained by reference to the accompanyingdrawings, in whichi Figure 1 is a horizontal section showing theapplication of my invention. Fig. 2 is a transverse section showing theconstruction of the spiral blades.

1 It is'the object of my invention to provide an eflicient means for thepropulsion of vessels by the application of power through the medium ofspiral screw propellers j ournaled parallel with the run of the vessel,and upon opposite sides.

The propellers are in'the form of s irally disposed blades having anumber of turns about a central shaft A. The blades 2 have a wideperipheral rim' 3 projecting upon each side, and overhanging thethickness of the blades, thus forming spiral channels around the shaft,so that when the shaft is revolved, the action of the spirals in thewater would be to force the vessel ahead, and these overhanging flangesprevent the water being unduly thrown outwardly by centrifugal force;the confinement by these flanges assisting. materially in the effectiveaction of. the ropelling screws. These screws are preferably journaledupon each side of the vessels run or bilge, just above the keel, and insuch position as to be reasonably safe from injury from the outside.'

The ends of the screw shafts A are journaled in suitable hangers orboxes as at 4-4. The rear box 4 may serve as a thrust bearing for theshaft which extends through the forward box 4, and is connected by auniversal joint 5 with the driving-shafts 6. These shafts are carried.throu h the sides of the vessel to connect with t e engine or motor;and I have here shown them as passing through tubular sleeves 7, whichsleeves pass through the sides of the vessel, and

' have water-tight joints at the points where 'by universal joints 8with the shafts 9 through which power is transmitted to the shafts 6,and through them to the propellers exterior to the vessel.

The motor may be of any suitable construction. I have here illustrated afourcylinder motor at 10, 'the crank shaft of which transmits power tothe shafts 9, through gearing as shown at 11. By this construction theshafts 9 transmitting power through the shafts 6 to the propellers, areseparated as falnas possible toward the bilge of the vessel, and theangles of the shaft 6 are correspondingly reduced.

Having thus described my invention, what I claim and desire to secure byLetters Patent is The combination with avessel, of propellers journaledupon each side of the run. or bilge of the vessel, said propellers beingin the form of spirally disposed blades havin a number of turns about acentral shaft, said blades having a wide peripheral rim projecting uponeach side so as to form spiral channels around the shaft, hangersfixedly secured to the outer sides of the vessel, the rear hangersserving as thrust bearings for the shafts of the propellers, said shaftsextending through the forward hangers, tubular sleeves of substantiallength passing through the sides of the vessel and forming water-tightjointsat the oint where' theypass through, driving s afts passingthrough said sleeves, universal oints etween the outer ends of theshafts and the propeller shafts, a motor, and gearlng between the same.and the driving shafts for operating the pro ellers.

In testimony w ereof I have hereunto set my hand in the presence of twosubscribing witnesses.

Witnesses:

FRANK EMMONS, Jnwr. STARK.

WALLACE n. HAYNES.

